
Built because I needed it.
I started running in November 2024. Logging real miles by spring — distances I had never run before. Every pair of underwear I owned was failing me.
Soaked through by mile three. Lost shape after a month. The seams dug in. The brands you have heard of were not built for the way I was moving.
Then it got worse. Chafing. Then a raw scratch on my inner thigh from a seam that would not lie flat — bad enough it kept me off the road for a week.
That is when I stopped waiting for someone to make the pair I needed.
Timi · on a training run
I went down to NYC's fabric district. Looked at material after material. Tested combinations until I found one that disappeared under shorts and held up through long runs.
I made ten pairs for myself. Wore them for four months. Took a few to Miami with friends — they asked for more.
I sent samples to 600 people. Every single one came back with the same words:
“I don't feel anything.”
That is TMI.

TMI is built for anyone who appreciates movement. For anyone whose first thought in the morning should not be the seam on their hip.
The name is literal. Your underwear is private. Too personal to talk about. Too important to ignore.
— Timi
Founder, TMI